CS8M320 (referred to as M320) series of economical signal chain MCU launched by Core Sea Technology 。The MCU integrates 12-bit fully differential ADC, low temperature drift reference, capacitance measurement module CVC and other signal chain modules to accurately meet the conventional voltage, current, temperature, capacitance signal measurement needs 。At the same time, the M320 also provides standard communication interfaces (I2C and UART) as well as PWM output, providing users with rich signal output options。

The M320 offers significant advantages over conventional 8-bit MCU products。

Difference mode

The M320 provides a measurement solution with higher accuracy, faster speeds, and wide voltages to maintain outstanding performance in complex environments。

1) High precision:Support signal measurements as low as 1mV: INL/DNL = ±1/±0.5LSB, and optimized for small signal measurement to reduce Offset and temperature drift, to achieve signal measurement within 1mV。

2) Fast speed:Switching reference/channel only 1μS: the maximum sampling rate is 125kHz, and the conversion time is 8μS;Switch reference, channel only 1μS establishment time, no waiting。

3) Wide voltage:2.0~5.5V, ADC operating voltage down to 2.0V。

In addition, the M320 built-in ADC also supports Wheatstone bridge, NTC, bidirectional induction current and other signal measurement circuits to meet different signal measurement needs。

M320 built-in capacitor signal measurement module, measuring range of 1~25pF, for capacitance signal measurement。

With integrated UART and I2C slave interfaces, the M320 has the following features in addition to the usual functions:

1) UART supports single-line communication mode to save IO resources

2) Support anti-backdown function, can communicate with 5V system when 3V or lithium battery power supply

3）支持1.8V communication level, can communicate with 1.8V system communication

At present, the M320 series products have been listed, providing QFN20 and SOP16 two packages for users to choose。Details are as follows: